UV Index in San Mateo, Peru

Last updated: June 2, 2025

In San Mateo, Peru, being aware of the UV Index is crucial for protecting your skin from harmful rays, especially given the region's elevated altitude and its ET climate. Understanding UV levels not only helps in preventing sunburn but also plays a vital role in maintaining long-term skin health. With the UV Index peaking at a striking 13 around noon, residents and visitors alike should take necessary precautions during the midday sun to mitigate exposure risks. Stay informed and protect yourself—from seeking shade to applying sunscreen, knowing the UV Index can make a significant difference in your sun safety strategy!

Hourly UV Index in San Mateo

Throughout the day, the UV Index experiences a notable ascent, peaking at 13 between 12:00 PM and 1:00 PM, signaling a potential for strong sun exposure. The morning starts off gently with a maximum of only 1 at 7:00 AM, then advances to 5 by 9:00 AM. Sun-seekers should be cautious as the index soars to 12 by 11:00 AM, indicating high risk for harm from unprotected sun exposure. After its zenith, the index gradually declines to 8 at 2:00 PM, then follows with a steady decrease to 0 by 7:00 PM, marking the end of intense UV exposure. As the day wraps up, it's clear that midday sun is best approached with protection in place!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Mateo

The UV Index exhibits extreme levels of exposure year-round, with values frequently peaking between 19 and 20. The highest risk months are January, February, March, and November when the UV Index consistently reaches 20, indicating a burn time of just 10 minutes. Even during the summer months, such as June to August, the UV Index remains notably high, ranging from 13 to 15. Therefore, it is crucial for both visitors and residents to take necessary precautions throughout the year, especially in the peak UV months. Wearing sunscreen, protective clothing, and limiting sun exposure during peak hours are essential steps to safeguard against harmful UV radiation.

Monthly Maximum UV Index for San Mateo, Peru

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Mateo. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for San Mateo, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare San Mateo UV Index with Other Peru Cities

The table above highlights how UV exposure in San Mateo compares to other major locations across Peru. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Mateo's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Callao UVI	14	14	14	12	10	9	10	11	12	13	14	13
Lima UVI	14	14	14	12	10	9	10	11	12	13	14	13
Trujillo UVI	15	15	15	14	12	11	11	11	13	14	14	14
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17
San Mateo	20	19	20	18	14	13	14	15	17	18	20	18